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Re: Pressure Testing

Hi Josip,

Thanks for your reply.

I do pressure testing of chiller at least once in a week.But I am unaware about the significance of writing down the " Air Temperature " . As you said, sometimes there is no leak , its just a pressure difference. I will be thankful to you , if you will explain it in.

Re: Pressure Testing

Hi, Sumit

Originally Posted by Sumit

Hi Josip,

Thanks for your reply.

I do pressure testing of chiller at least once in a week.But I am unaware about the significance of writing down the " Air Temperature " . As you said, sometimes there is no leak , its just a pressure difference. I will be thankful to you , if you will explain it in.

Sorry, this I do not understood ...... why and how you make a pressure testing of chiller at least once in a week .... can you explain that, please ...

Please, carefully read again my answer

You need temperature readings ...just different ..... .

if we have a pressure difference -/+ (you can have even higher pressure next day, or the same but still with the leak/s) we have to know why .... due to leak or due to temperature change ....
It is not a good way to tell you all ... I had to learn and you must too nowadays is easy .... very easy .... in my time there were not internet and not enough books end even not so much knowledge as todays ... so what you learn is yours forever and then you can transfer your knowledge to new generation/s ... agree

... there are some formulas to calculate P, V or T for ideal gas ... in your case the V volume is the same .... P pressure must be the same in case of no leak .... but can be different due to environment temperature T ... i.e. air temperature in your room ... that is the reason why we need temperature readings to calculate state of our gas ... nitrogen ....

Be careful .... P and T in formula for calculation are in absolute units ....

Re: Pressure Testing

Hi Josip ,

I got it now, the significance of considering room temperature in pressure testing.

Actually , i work for a maintenance company ; we have contracts of operation, maintenance and commissioning of chiller plants.I usually work on YORK chillers and I found that they are more prone to " GAS LEAK " as compared to other chillers like Trane,Carrier etc.

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